121021030313 has 2 divisors, whose sum is σ = 121021030314. Its totient is φ = 121021030312.

The previous prime is 121021030301. The next prime is 121021030387. The reversal of 121021030313 is 313030120121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106894994704 + 14126035609 = 326948^2 + 118853^2 .

It is a cyclic number.

It is not a de Polignac number, because 121021030313 - 2¹⁴ = 121021013929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121021030291 and 121021030300.

It is not a weakly prime, because it can be changed into another prime (121021030393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510515156 + 60510515157.

It is an arithmetic number, because the mean of its divisors is an integer number (60510515157).

Almost surely, 2^121021030313 is an apocalyptic number.

It is an amenable number.

121021030313 is a deficient number, since it is larger than the sum of its proper divisors (1).

121021030313 is an equidigital number, since it uses as much as digits as its factorization.

121021030313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121021030313 its reverse (313030120121), we get a palindrome (434051150434).

The spelling of 121021030313 in words is "one hundred twenty-one billion, twenty-one million, thirty thousand, three hundred thirteen".